. >> but the wheels of government run slowly. the u.s. epa rarely grants state waivers. the last one was after hurricane katrina. because california has special restrictions to ensure we have the cleanest gasoline in the world, the state must sign off first. >> you have another layer of government activity that has to take place legally. >> as painful as the prices are, not everyone thinks california should switch to winter blend so soon when temperatures can still be on the high side. just this week parts of the state suffered through a heat wave when summer fuels can help fight off health damaging pollution. >> the cleaner gasoline is a key control measure. it cuts the emission that is causes smog and sends people to hospitals and emergency rooms. >> with the exxon mobile torrence factory back on line, supplies should increase. wholesale prices dropped 40 to 50 cents, but it won't be reflected at the pump until next week, so expect prices to stay high a few more days. long-term, the oil industry said california needs to expand infrastructure, build nor refineries, pipe